https://doi.org/10.1140/epjd/s10053-024-00799-6
Regular Article - Atomic and Molecular Collisions
Joint theoretical and experimental study on positron scattering by isopentane
1
Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, 81531-980, Curitiba, Paraná, Brazil
2
Department of Applied Chemistry and Biotechnology, Chiba University, 1-33 Yayoi-cho, Inage-ku, 263-8522, Chiba, Japan
3
Laser Physics Centre, Research School of Physics, Australian National University, 2601, Canberra, Australia
4
College of Science and Engineering, Flinders University, 5042, Adelaide, South Australia, Australia
5
Institute of Actuarial Science and Data Analytics, UCSI University, 56000, Kuala Lumpur, Malaysia
Received:
4
November
2023
Accepted:
2
January
2024
Published online:
23
January
2024
In this work, we present a joint theoretical and experimental study for positron scattering by isopentane (C
H
). These are the first experimental differential cross sections ever measured for the scattering of positrons by the isopentane molecule. The cross-section calculations employed the Schwinger multichannel method in the static plus model polarization potential approximation. The present calculated integral cross sections correctly reproduce the qualitative behavior of the measured total cross sections, while the calculated differential cross sections reproduce the oscillatory patterns observed in the present experimental differential cross sections. The sharp increase, seen in the calculated elastic cross sections as the impact energy goes toward zero, points to the existence of a positron-isopentane bound state, which is consistent with previous experimental results.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
